Chill



barren stares PATENT @FHQE.

WILLIAM I. SMITH, OF GARY, INDIANA.

CHILL.

To all (U/2,0772 it may concern:

Be it known that 1, WILLIAM 1. SMITH, a citizen of the United States, residing at Gary, in the county of Lake and State of Indiana, have invented certain new and use ful Improvements in a Chill, of which the following is a specification.

This invention relates to furnaces and more particularly to the industrial, basic open hearth steel furnaces using gas ports, and the object of the invention is to produce a protector or a chill that can be used to protect arches over port flue and blocks on each side of the port flue which melt away from the intense heat.'

The invention consists in inner and outer plates suitably connected and spaced, and a series of water pipes disposed between them and protected by refractory material, the inlet of water to the several pipes being separately controlled so that the supply of water may be cut off from any of the pipes that burn out.

The invention also comprises other details of construction which will be hereinafter fully described and claimed, and are shown in the drawings wherein:

Figure l is an enlarged detailed elevation, partly broken away to show the refractory material.

Figure 2 is a plan view of this end of the furnace with the invention applied.

Referring now to the drawings wherein like reference characters designate corre sponding parts throughout the several views, in the accompanying drawing A represents a hearth wall having an arched flue F, while covering the front portion of the wall is the inner plate 1, provided with suitable bolt openings arranged to receive the bolts 5, and the intake opening 3.

Referring in particular to Figure 1, it will be seen that the inner plate has the radially disposed spacing blocks 4 arranged thereon to receive the curved water pipes 7, 8. and 9 respectively, the said blocks being held in position by the bolts above referred to. Skirting the outer edge of the said plate is the curved chill pipe 7 and skirting the inner edge of the said plate is the curved chill pipe 9, while between the respective chill pipes 7 and 9 is the central, curved chill pipe 8, all of said pipes being held in spaced relation by the blocks above referred to.

An adequate number of water pipes, 10, 11, and 12, each of which are provided with Specification of Iietters'latent.

Patented July 4, 19223.

Application filed December 10, 1918. Serial No. 266,079.

control valve are inserted through one wall of the furnace from the outside for connection to the inlet terminals of the respective chill pipes 7, 8, 9. The supply pipe 10 is connected to the pipe 7 by a T-coupling 14;, carried by the inlet terminal of the said pipe 7. This coupling l l carries an extension pipe 15 which leads outwardly therefrom over the left-hand block B and any suitable connection, such as an elbow 16 may be employed for coupling it to a supply pipe 17, the latter being likewise inserted through the furnace wall. The supply pipes 11, may each be coupled to their respective chill pipes by ordinary straight couplings 18, it being noted that with respect to the chill pipe 9 the said coupling is not carried the terminal end, since each terminal of this pipe is intended to be sealed at a point above the terminal end where a short inlet pipe 19 is provided. The discharge side of the chill structure is practically a duplicate of the inlet side, the T-coupling let permitting the pipe 7 to discharge through the pipe 10 an extension 15, while straight couplings 18', permit the pipes 8 and 9 to discharge through the respective pipes 11, 11 and 12 respectively. As the supply pipes may ordinarily lead from a common source of supply at some distant point, exteriorly of the furnace, so on the other hand the discharge pipes may be discharged exteriorly of the furnace in a common waste. Integrally connected to and in communication with each of the exposed terminal portions 21 of the chill pipe 9 is a tube 22, extending rearwardly through the gas port F, said tube being slightly spaced from the adjacent wall of the arch and eventually passing exteriorly of the furnace wall in the rear of the arch, where it has its outlet. These tubes extend across the bed 23 of the flue arch F and if so desired these pipes may be imbedded in the refractory material, it being of course understood that in the preferred embodiment of the invention the said tubes would ordinarily be leftexposed above the bed of the fine, as clearly indicated in Figures 1 and 2 of the drawing. An auxiliary chilling section is also employed and designed to protect the top surfaces of the arched blocks B, which are exposed to the intense heat of the furnace. This auxiliary system consists of a pipe coil 25 arranged to extend over the top of the block B between the supply pipes 10 and 17 on the inlet side and between the discharge pipes on the outlet side. To each coil 25 there is coupled a valve controlled supply pipe, while a discharge pipe leads from the other end.

In the application of the invention, thechill as has been seen, consists of chill pipes disposed between two plates and is placed in the furnace so as to rest against the front face or inclined wall of the arch, in the manner illustrated. The chill thus chills the entire front face of the arch, while the water tube is running rearwardly through the arch protecting the interior of the port. The discharge and supply pipes are coupled to the chill pipes in the manner described. Since the tubes extend within the port F, a cooling influence -is thereby exerted over the hot gases passing through the arch. particularly with respect to the lower side wall portion and bed of the port, along which the tubes extend. thus protecting'the interior of the arch from the ruining influence of the hot gas currents. Not only is the face of the arch thus pro-- tected by my invention but the arched blocks B which are ordinarily exposed to the same intense heat are also protected, the coils protecting the top and the supply and discharge pipes connected to the chill pipes protecting the front.

In the accompanying drawings, I have illustrated my invention embodied in one form by Way of example, and which in practice has been found to be highly satisfactory in obtaining the desired results. It will be obvious however. that other embodiments may be adopted, and that various changes in the details of construction may be resorted to by those skilled in the art without departing from the spirit and scope of the invention. It is furthermore understood that the invention is not necessarily limited or restricted to the precise elements shown except in so far as such limitations are specified in the subject matter being claimed.

Having shown and described my invention, what I now claim as new and desire to secure by Letters Patent of the U. S. is:

In a furnace of the character described, the combination with an arched hearth wall having a flue, an inner face fixed to the outer face of said wall, a curved tube pipe skirting the extreme inner and outer edges of said plate, a curved tube pipe and a plurality of radially disposed spacing blocks beween the outer and inner chill pipe for maintaining the same inparallel, spaced relation, said. inner pipe having a lateral outwardly directed extension at each end and a straight pipe connection continuing from each of said ends and extending horizontally within said flue, supply and discharge pipes connecting the ends of the respective chill pipes, an auxiliary pipe cooling section between the supply and discharge pipes and valve controlled means for introducing and receiving a continuous flow of water through the system.

In testimony whereof I afiix my signature in presence of two witnesses. v

\VILLIAM I. SMITH.

\Vitnesses lVILLLiM J. FRANK, O'r'ro C. BORMANN. 

